This PAS-C01 practice question tests your understanding of migration. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is migrating a monolithic application to AWS. The application has a relational database with complex queries and requires low-latency read replicas. Which database migration strategy minimizes downtime and supports heterogeneous migrations?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Database Migration Service (DMS) with ongoing replication.
Option C is correct because AWS Database Migration Service (DMS) supports heterogeneous migrations (e.g., Oracle to Aurora) and can minimize downtime using ongoing replication. Option A is wrong because it is for homogeneous migrations. Option B is wrong because it is a backup/restore tool, not a live migration service. Option D is wrong because it is for data warehouse workloads, not transactional databases.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use AWS Backup to take a full backup and restore to Amazon RDS.
Why it's wrong here
AWS Backup is a backup service, not a live migration tool.
✗
Use AWS Schema Conversion Tool (SCT) to convert the schema and perform a homogeneous migration.
Why it's wrong here
SCT is for schema conversion, not the live migration service.
✗
Use Amazon Redshift Spectrum to query the data in place.
Why it's wrong here
Redshift is a data warehouse, not suitable for this use case.
✓
Use AWS Database Migration Service (DMS) with ongoing replication.
Why this is correct
DMS supports heterogeneous migrations and minimizes downtime.
Related concept
Standard ACLs match source addresses.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PAS-C01 ACL questions on filtering logic and placement.
Migration — This question tests Migration — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use AWS Database Migration Service (DMS) with ongoing replication. — Option C is correct because AWS Database Migration Service (DMS) supports heterogeneous migrations (e.g., Oracle to Aurora) and can minimize downtime using ongoing replication. Option A is wrong because it is for homogeneous migrations. Option B is wrong because it is a backup/restore tool, not a live migration service. Option D is wrong because it is for data warehouse workloads, not transactional databases.
What should I do if I get this PAS-C01 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PAS-C01 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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